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Finding the Fourth Proportional to 641,484.55, 885,276.46 and 355,004.73

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Solution

The fourth proportional to 641,484.55, 885,276.46 and 355,004.73 is: 489,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,484.55 : 885,276.46 = 355,004.73 : x
  2. Step 2: Convert to fraction form
    641,484.55/885,276.46 = 355,004.73/x
  3. Step 3: Cross multiply
    641,484.55x = 885,276.46 × 355,004.73
  4. Step 4: Simplify right side
    641,484.55x = 314,277,330,657.66
  5. Step 5: Solve for x
    x = 314,277,330,657.66/641,484.55
  6. Step 6: Final answer
    x = 489,921.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.